About the project
At the Faculty of Science and Technology (REALTEK), an innovative high temperature CO2 capture concept has been developed since 2009; namely Carbon Capture in Molten Salts (CCMS).
The method is based on similar principles as the Calcium Looping technology (CaL), but with the active substances (CaO/CaCO3) dissolved or partly dissolved in molten salts. This allows for faster reaction kinetics, higher CO2 sorption capacity, and avoiding solids attrition issues.
Through the terminated CLIMIT-FoU projects CCMS-I (Project 199900, 2010-2013) and CCMS-II (Project 233804, 2014-2018), a laboratory for high temperature molten salts research has been established.
The CCMS concept has been validated for both absorption and desorption in a one chamber labscale reactor by bubbling simulated flue gases (0.76–15 vol% CO2 in N2) through various chloride and fluoride based melts. This shows that the method is applicable for capturing CO2 from a variety of flue gases related to both energy intensive industry and power generation.
CCMS – Prototype (2020-2023) is continuation of the CCMS development. The main aim of the project is to construct a two-chamber prototype reactor. Additionally, we will perform chemical characterization of the molten salt systems, evaluate and test construction materials suitable for the prototype, and investigate the effect of real flue gases on the sorption capacity.
The project is coordinated by AGH University of Science and Technology (Poland), and funded by POLNOR CCS 2019 Call.
We expect to have several topics for master theses during the project period. Previous master theses within CCMS are listed under "Publications".
Publications in refereed scientific journals
- Grøtan, Åshild; Olsen, Espen; Nygård, Heidi S. Carbon Capture with Metal Oxides in Molten Salts: MgO, SrO and CaO as Sorbents. SINTEF proceedings 2019 (4) s. 63-75
- Nygård, Heidi S.; Meyer, Julien; Di Felice, Luca; Eldrup, Nils Henrik; Haug, Alf Tore; Olsen, Espen. Techno-economic study of the CCMS Technology for CO2 capture from ferro-silicon production. SINTEF proceedings 2019 (4) s. 63-75
- Nygård, Heidi S; Hansen, Maria; Alhaj-Saleh, Yasen; Palimaka, Piotr; Pietrzyk, Stanislaw; Olsen, Espen. Experimental evaluation of chemical systems for CO2 capture by CaO in eutectic CaF2-CaCl2. AIMS Energy 2019. 7. p. 619-633.
- Olsen, Espen; Hansen, Maria; Nygård, Heidi S. Hydrolysis of molten CaCl2-CaF2 with additions of CaO, AIMS Energy 2017; 5, (6), p. 873-886.
- Nygård, Heidi S.; Tomkute, Viktorija; Olsen, Espen. Kinetics of CO2 absorption by calcium looping in molten halide salts, Energy Procedia 2017; 114, p. 250-258.
- Tomkute, Viktorija; Solheim, Asbjørn; Sakirzanovas, SImas; Olsen, Espen. Reactivity of CaO with CO2 in molten CaF2–NaF: formation and decomposition of carbonates. Energy Science & Engineering 4.3 (2016): 205-216.
- Tomkute, Viktorija; Solheim, Asbjørn; Olsen, Espen. CO2 capture by CaO in molten CaF2–CaCl2: optimization of the process and cyclability of CO2 capture. Energy & Fuels 28.8 (2014): 5345-5353.
- Tomkute, Viktorija, Solheim, Asbjørn; Sakirzanovas, SImas; Øye, Bjarte; Olsen, Espen. Phase equilibria evaluation for CO2 capture: CaO–CaF2–NaF, CaCO3–NaF–CaF2, and Na2CO3–CaF2–NaF. Journal of Chemical & Engineering Data 59.4 (2014): 1257-1263.
- Olsen, Espen, and Viktorija Tomkute. Carbon capture in molten salts. Energy Science & Engineering 1.3 (2013): 144-150.
- Tomkute, Viktorija, Asbjørn Solheim, and Espen Olsen. Investigation of high-temperature CO2 capture by CaO in CaCl2 molten salt. Energy & Fuels 2013, 27, 9: pp. 5373-5379.
PhD theses
- Carbon capture by CaO in molten halide salts (Viktorija Tomkute, 2014)
Master's theses
- Carbon Capture in Molten Salts: An extensive survey of chemical systems with MgO as sorbent (Petter Nygård Lerøen, 2020)
- Carbon Capture with Metal Oxides in Molten Salts: MgO, SrO and CaO as sorbents (Åshild Grøtan, 2019).
- Carbon Capture in Molten Salts: The Effect of Sulfation (Nils Amund Rusås Ruud, 2018)
- Carbon Capture in Molten Salts: The Effect of Hydrolysis (Maria Hansen, 2017)
- Carbon Capture in Molten Salts: Absorption and Desorption of CO2 by CaO-sorbent in Eutectic CaF2/CaCl2-melt (Yasen Alhaj-Saleh, 2014)
- Carbon Capture in Molten Salts: Absorption and Desoprtion of CO2 by CaO in Molten NaF/CaF2 (Ana Korvald, 2012)